<!DOCTYPE html>
<html>

<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <meta http-equiv="X-UA-Compatible" content="ie=edge">
  <title>圣杯布局</title>
  <link rel="stylesheet" href="./myCss/grail.css">
</head>

<body>
<div id="header">this is header</div>
<div id="container" class="clearfix">
  <div id="center" class="column">this is center</div>
  <div id="left" class="column">this is left</div>
  <div id="right" class="column">this is right</div>
</div>
<div id="footer">this is footer</div>
</body>

</html>
